Fast fitting of radial basis functions: Methods based on preconditioned GMRES iteration
The authors propose preconditioning strategies which diminished number of flops and storage requirements in large radial basis function interpolation problems. The strategy is based on a change of basis to a basis of approximate cardinal functions. The GMRES iterative method for non-symmetric systems is used. Richly illustrated numerical examples are discussed. Possible applications in image wrapping, medical imaging, topography, bathymetry, hydrology, aeromagnetic survey, geophysics and geology, are mentioned.
scientific article; zbMATH DE number 1407670
scientific article